METHOD OF SHORT-TIME INCREASE OF GAS-DYNAMIC STABILITY OF GAS-TURBINE ENGINE Russian patent published in 2005 - IPC

FIELD: aircraft engineering.

SUBSTANCE: invention relates to methods of provision of gas-dynamic stability of gas-turbine engine under extreme conditions which might lead to violation of stable operation. According to proposed method threshold value of signals which characterize extreme conditions of engine operation are determined and values of signals characterizing conditions of operation of engine are measured and in period of time when value of signals exceeds threshold value, i.e. in period when danger of violation of gas-dynamic stability exists, cooling liquid, for instance, water, is injected through nozzles into compressor flow passage in amount of 1-3% of amount of air in main flow, injection of cooling liquid is provided into intake channel, uniformly over its circumference, before compressor. Use of proposed method not only increases gas-dynamic stability of engine, but provides increase in compressor capacity and engine thrust, respectively.

EFFECT: provision of stable operation of gas-turbine engine without loss of thrust.

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